JP6700053B2 - Medical device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical device, and more particularly, to a tilting mechanism of an operating table that can tilt a table.

  Since the operating table needs to move a specific part of the patient to a position where a doctor can easily treat it, the operating table is usually equipped with a device that can vertically or vertically roll the table on which the patient is placed (see Patent Document 1). ).

  For example, in the operating table shown in Patent Document 1, a table is connected to a column via a vertical axis and a horizontal axis, and the table can be tilted in a predetermined direction on the column with the vertical axis or the horizontal axis as a fulcrum. It is possible.

JP, 2004-073616, A

  By the way, various constituent members for operating the table are provided below the table, and particularly when the table is operated with a large vertical rotation angle, there is a risk of interfering with such constituent members. Therefore, in designing the operating table, it is necessary to sufficiently consider the installation location of the components and the like.

  Further, when a cylinder device that expands and contracts a rod is used for the vertical movement of the table, if the stroke of the rod is increased, the rod angle also increases according to the vertical rotation angle, and it is easy to interfere with the components of the operating table.

  Therefore, in order to solve an example of such a problem, the present application provides a medical device capable of operating a table at a large tilt angle without the table interfering with various components in the tilting operation of the table. To aim.

In order to solve the above-mentioned subject, the medical device according to claim 1 has a table arranged so as to be connectable to either one of two rotation shafts above a column standing on a base, and the table is vertically arranged. And a fixing means for fixing one of the rotating shafts as a fulcrum shaft in accordance with the tilt direction of the table, and the lifting device is provided between the two rotating shafts. and a raised push, by tilting the table one of the rotating shaft as a fulcrum, the fixing means when fixed one of the rotating shaft as the fulcrum axis, movably releasing the rotation axis of the other It is characterized by The medical device according to claim 2, wherein the elevating device has a rod that expands and contracts in the vertical direction, and the rod pushes up the table in the vertical direction between the two rotation shafts. ..

Further, the medical device according to claim 3 is the medical device according to claim 1 or 2 , further comprising an interlock mechanism that prevents movement of the fixing means that fixes the rotating shaft. And

A medical device according to a fourth aspect is the medical device according to any one of the first to third aspects, wherein the fixing means fixes the rotating shaft rotatably supported, or A plurality of hooks for movably releasing a fixed rotating shaft, wherein when the one rotating shaft is fixed by the one hook, the other rotating shaft is released from the other hook. To do.

  It is possible to operate the table at a large tilt angle without interfering with various components arranged below the table.

It is a schematic diagram which shows the structural example of an operating table. It is a schematic diagram which shows the vertical example of an operating table. It is a schematic diagram which shows the structural example of a vertical rotation mechanism. It is a schematic diagram which shows the operation example of a vertical rotation mechanism. FIG. 5 is a schematic diagram showing an operation example of the fixing/releasing device when seen through from the lower left side of FIG. 4. It is a schematic diagram which shows the external appearance example of a hook. It is a schematic diagram which shows the structural example of an interlock mechanism. It is a schematic diagram which shows the structural example of a hydraulic circuit.

  Embodiments of the present invention will be described below based on the embodiments of the present invention shown in the accompanying drawings. In the following description, “vertical roll” means an operation of inclining the table in the longitudinal direction. Further, for convenience, in the operating table shown in FIG. 1, the head side of the patient placed on the table of the operating table is referred to as the front and the leg side is referred to as the rear. Regarding the vertical axis that functions as a fulcrum during vertical rotation, the vertical axis that is arranged on the front side of the operating table S is the first vertical axis 21, and the vertical axis that is arranged on the rear side is the second vertical axis. It may be described as the vertical axis 22.

  Further, the operating table S of the present embodiment also includes a medical examination table, a treatment table, and the like having different uses. Further, the vertical rotation mechanism used in the operating table of the present embodiment can be applied to various medical devices used in the medical field.

  As shown in FIG. 1, the operating table S includes, for example, a base 2 placed on the floor of an operating room, a column 5 standing on the base 2, and a table 10 mounted on the column 5. Is equipped with.

  A caster 3 is attached below the base 2, and the caster 3 allows the operating table S to freely move the floor surface of the operating room. The caster 3 is not an indispensable constituent element and is provided as needed.

  In addition, for example, a control device or the like that functions as a control unit for electrically controlling the operation of the operating table S is housed inside the base 2, and the rear upper surface for operating the operating table S. A touch panel type display body 4 is provided.

  The column 5 has a telescopic type expandable/contractible cover 5a, and within this cover, a plurality of rods (not shown) that are combined to be extendable/contractible in the vertical direction on the base 2 and the rods are extended/contracted. A table lifting mechanism such as a hydraulic cylinder device (not shown) is housed. When the hydraulic cylinder device is driven, the rod expands and contracts to change the height of the column 5 in the vertical direction, and the table 10 is adjusted to a predetermined height.

  The table 10 is for mounting a patient, and as shown in FIG. 1, is provided with, for example, frame bodies 11a to 11d which are divided into a head portion, a back portion, a waist portion, and a leg portion, respectively. A mattress 12 made of a mat or cushion having a predetermined thickness is attached to each of the frames 11a to 11d to be used as a bed, and has a size that allows a patient to lie down. Although not shown, each of the frame bodies 11a to 11d is connected by bending so as to be pin-coupled to each other, and is configured to be rotatable in the vertical direction, and can be fixed in a predetermined positional relationship by a locking device (not shown). ..

  It should be noted that the table 10 of the present embodiment, as shown in FIG. 1, is configured as a split type in which the posture of the patient can be changed by rotating (bending) each of the frame bodies 11a to 11d. Each of the frames 11a to 11d is configured to be detachable, and can be replaced with a single plate-shaped member according to the contents of surgery or treatment.

  As shown in FIG. 2, the table 10 is connectable with two vertical shafts 21 and 22 arranged in front and rear thereof, and is inclined as shown in FIGS. 2(b) and 2(c). It is connected to one of the vertical shafts 21 and 22 selected from the two vertical shafts 21 and 22 according to the direction, and is tilted with the vertical shafts 21 and 22 as a fulcrum.

  Further, the table 10 and the column 5 are connected by a vertical drive device 25 (elevating device of the present application) for moving the table 10 up and down, and the table 10 is raised by the extending operation of the vertical drive device 25, as shown in FIG. As described above, the table 10 is vertically rotated in the direction of the arrow with one of the vertical shafts 21 and 22 as a fulcrum.

  A table frame 15 extending below the central portion of the table 10 is mounted, and a vertical rolling frame 31 is mounted on the column 5. The vertical rolling frame 31 is arranged so as to overlap the inside of the table frame 15. To be done.

  As shown in FIGS. 3 and 4, the two vertical rotation shafts 21 and 22 are provided at the same height in front of and behind the table frame 15 so as to be hung on both inner side surfaces of the table frame 15. A connecting shaft 23 that is connected to the vertical drive device 25 is provided between the rolling shafts 21 and 22 (central portion).

  As shown in FIGS. 2 and 3, a vertical rotation driving device 25 is attached to the connecting shaft 23 via a rotatably attached link 26, and the vertical rotation driving device 25 is, for example, a table shown in FIG. The lower end portion of the vertical rolling frame 31 arranged inside the frame 15 and the cover 5a of the column 5 is fixed and accommodated in the base 2.

  As the vertical rotation drive device 25, for example, a cylinder device driven by a hydraulic pressure generation device (not shown) provided in the base 2 is used. As shown in FIG. 2, the cylinder device includes a rod 25a that can be expanded and contracted by hydraulic pressure, and a link 26 is attached to the tip of this rod 25a. Then, by the extending operation of the rod 25a, the table 10 is pushed up via the link 26 as shown in FIG. 2(b), FIG. 2(c), or FIG. 4, and as shown in FIG. The table 10 is vertically rotated in a predetermined direction with the rolling shaft 21 or the second vertical rolling shaft 22 as a fulcrum.

  Further, the lower end portion of the cylinder device is fixed so that the rod 25a can be expanded and contracted in the vertical direction, and when the rod 25a is extended, only the link 26 is bent and the table 10 is pushed upward. The rod angle does not change even if the stroke of the rod 25a is increased. Therefore, even when the tilt angle of the table 10 is large, it is possible to easily prevent interference between the cylinder device including the rod 25a and the constituent members of the operating table S.

  As shown in FIGS. 2 to 4, U-shaped notches 32 and 33 for receiving the first vertical shaft 21 and the second vertical shaft 22 are formed in the vertical rolling frame 31 in the front and rear of the left and right side surfaces. Then, when the table 10 is horizontal, as shown in FIG. 3, the two vertical shafts 21 and 22 are received in the notches 32 and 33. As shown in FIG. 4, for example, the two vertical shafts 21 and 22 are arranged such that, when one of the vertical shafts 21 is received and fixed in the cutout 32, the other vertical shaft is rotated when the table 10 is vertically rotated. The shaft 22 separates from the cutout 33.

  Further, as shown in FIG. 3, one of the two vertical shafts 21 and 22 received in the notches 32 and 33 is fixed before and after the vertical frame 31 when the table 10 is vertically rolled, A fixing/releasing device 40 (fixing means of the present application) for releasing the other is provided. As shown in FIGS. 3 to 5, the fixing/releasing device 40 includes a hydraulic unit 45 and a hook 35 that fixes or releases the vertical shafts 21 and 22 by driving the hydraulic unit 45. As shown in FIG. 3, the fixing/releasing device 40 is arranged in the vicinity of each of the two vertical shafts 21 and 22, and uses the hooks 35 to fix or release the vertical shafts 21 and 22, respectively.

  As shown in FIG. 5, the hydraulic unit 45 is, for example, a single-acting hydraulic cylinder device 50, a hydraulic circuit 47 connected to the cylinder device 50, and the cylinder device 50 via the hydraulic circuit 47. A hydraulic pressure generation device 48 for supplying hydraulic oil to the above, and a valve unit 49 provided in the hydraulic circuit 47 for switching the flow path through which the hydraulic oil passes.

  The cylinder device 50 includes a cylindrical cylinder body 51, and the inside thereof has a hollow interior 51a. The cylinder device 50 includes pistons 53, 53 disposed on the left and right sides of the chamber 51a so as to be slidable in the axial direction, and spheres 55, 55 attached to the pistons 53, 53, as shown in FIG. As shown by the arrow, the operating oil supplied from the hydraulic pressure generator 48 generates a driving force for moving the piston 53 to both sides.

  It should be noted that, for example, a hole portion (not shown) having a diameter smaller than the diameter of the spherical body 55 formed for preventing the spherical body 55 from falling is formed at both left and right ends of the cylinder body 51. The sphere 55 can be projected outward.

  As shown in FIG. 3, the hook 35 is provided with a pair of left and right hook bodies 35 a in front of and behind the vertical frame 31, and is rotatably supported near the notches 32 and 33. Further, as shown in FIG. 5, a cylinder device 50 is arranged inside the pair of left and right hook bodies 35a, 35a.

  As shown in FIG. 6, the hook main body 35a has a first recess 36 that can be fitted to the vertical shafts 21 and 22, and the first recess 36 is rotated by the rotation of the hook main body 35a. , 22 are fitted to a part of the peripheral surface.

  Further, the hook 35 has a second concave portion 37 that is fitted with the spherical body 55 of the cylinder device 50. As shown in FIG. 5A, the second concave portion 37 has both ends of the cylinder main body 50. It is arranged on the outside of the unit so as to face the sphere 55.

  A part of the second concave portion 37 functions as a cam surface that rotates the hook 35 when an external force is applied, and the sphere 55 is pressed against the cam surface to rotate the hook 35. Further, when the spherical body 55 is pressed against the cam surface, the spherical body 55 moves along the cam surface and is fitted into the second recess 37. The vertical rotation shafts 21 and 22 are fitted and fixed to the first recess 36 by the rotation of the hook 35 caused by the movement of the sphere 55 (see FIG. 5A).

  As shown in FIG. 5, the hydraulic pressure generator 48 includes a pump P and a tank T, and is connected to a hydraulic circuit 47 via a valve unit 49. Further, as shown in FIGS. 5A and 5B, the hydraulic circuit 47 causes the valve unit 49 to discharge the hydraulic oil from the cylinder device 50 to the tank T and the flow path for supplying the hydraulic oil to the cylinder device 50. The flow path is switched to (return).

  Then, the hydraulic unit 45 performs the fixing operation of the vertical shafts 21, 22 by the hook 35 and the fixing release operation of the vertical shafts 21, 22 by the hook 35 by switching the flow path of the hydraulic circuit 47 by the valve unit 49.

  In the present embodiment, the “fixing operation of the vertical shafts 21, 22 by the hook 35” means that the first recess 36 of the hook body 35a is fitted to the vertical shafts 21, 22. In the form, it means an operation of rotating the hook body 35a counterclockwise. On the other hand, the "fixing and releasing operation of the vertical shafts 21 and 22 by the hook 35" is to release the first recess 36 of the hook body 35a from the vertical shafts 21 and 22, and the hook body 35a is moved in the reverse direction ( Clockwise) refers to the operation of rotating.

  Next, a specific example of the operation of fixing one vertical shaft 21 and releasing the other vertical shaft 22 will be described with reference to FIGS. 4 and 5.

  First, when the first vertical shaft 21 is fixed, the valve unit 49 is controlled to supply hydraulic oil to the front cylinder device 50. When hydraulic oil is supplied to the cylinder device 50, as shown in FIG. 5A, the spherical body 55 is pushed outward by the piston 53, fitted into the second recess 37, and the hook 35 is rotated counterclockwise. The first vertical rotation shaft 21 is rotated to fit the first recess 36 of the hook 35 (FIG. 4). At this time, since the pressing force is constantly applied to the second recess 37 from the spherical body 55, the rotation of the hook 35 is prevented.

  On the other hand, when the second vertical shaft 22 is released, the valve unit 49 is controlled so that the hydraulic oil can be discharged from the rear cylinder device 50. When the hydraulic oil can be discharged from the cylinder device 50 (the cylinder device 50 and the tank T are connected), as shown in FIG. 4, the second vertical shaft 22 moves upward due to the vertical motion of the table 10. As the hook 35 rotates clockwise, the second vertical shaft 22 is separated from the first recess 36, and the fixing of the hook 35 is released. At that time, the rotation of the hook 35 pushes the sphere 55 back into the cylinder device 50 by the cam surface of the second recess 37, as shown in FIG. Is discharged to.

  Further, as shown in FIGS. 3 and 4, the operating table S is prevented from releasing the fixing of the hook 35 when the hydraulic circuit is broken due to some reason such as hydraulic fluid leakage. The interlock mechanism 70 is provided.

  As shown in FIG. 7, the interlock mechanism 70 includes a cylinder device 72 capable of expanding and contracting the rod 71 by hydraulic pressure, and the rotation of the hook 35 is prevented by the extension operation of the rod 71. Specifically, as shown in FIGS. 3 and 4, the cylinder device 72 is arranged such that the rod 71 extends on the rotation path of the hook 35 when releasing the hook 35 from each of the vertical shafts 21 and 22. Then, when the vertical shafts 21 and 22 are fixed by the hooks 35, the rod 71 of the cylinder device 72 is extended as shown in FIG. 7A.

  The cylinder device 72 of the present embodiment includes a cylindrical cylinder main body 73, the inside of which has spaces 73a and 73b divided into left and right, and each of the spaces 73a and 73b is provided with an elastic member 74 such as a spring from the inside. , 74 which are urged by the pistons 75, 75, and supply hydraulic oil from ports 76, 76 connected to the spaces 73a, 73b to resist the elastic force of the elastic members 74, 74. , 75 can be generated to return the inside.

  That is, as shown in FIG. 7A, when the hydraulic oil is not supplied to the spaces 73a and 73b, the rods 71 connected to the pistons 75 and 75 project outward from both ends of the cylinder body 73, As shown in FIG. 7B, when the working oil is supplied to the spaces 73a and 73b, the pistons 75 and 75 contract due to the pressure of the working oil, and the rod 71 is also housed in the cylinder body 73.

  The interlock mechanism 70 is driven, for example, in conjunction with the fixing/releasing device 40 described above, and the cylinder device 72 of the interlock mechanism 70 has a hydraulic pressure generating device 80 and a hydraulic pressure generating device 80 as shown in FIG. Connected via circuit 77.

  Specifically, as shown in FIG. 8, the hydraulic circuit 47a connecting the cylinder device 50A arranged on the front side and the valve unit 49 is connected to the cylinder device 72B of the interlock mechanism 70 arranged on the rear side. Hydraulic circuit 77b is connected. Further, the hydraulic circuit 47b connecting the cylinder device 50B arranged on the rear side and the valve unit 49 is connected to the hydraulic circuit 77a connected to the cylinder device 72A of the interlock mechanism 70 arranged on the front side.

  With this configuration, for example, since the hydraulic oil is not supplied to the interlock mechanism 70 corresponding to the hook 35 that fixes the vertical shafts 21 and 22, the rod 71 projects and the hook 35 moves in the counterclockwise direction. It is possible to prevent the hook 35 from being released even if the hydraulic circuit 47 fails. In addition, since hydraulic oil is supplied to the interlock mechanism 70 corresponding to the hook 35 that performs the fixing and releasing operation of the vertical rotation shafts 21 and 22, and the rod 71 is housed in the cylinder body 73, the rotating operation of the hook 35 is performed. Is not disturbed.

  Next, an operation example of the operating table will be described with reference to FIGS. 2A, 4 and 8. Although not shown, the valve unit 49 described below is controlled by the control device of the operating table S, and in this operation example, an operation of tilting the front side downward as shown in FIG. 2A will be described. To do. In the following description, for convenience, the cylinder device 50 of the fixing/releasing device 40 arranged on the front side of the operating table S is the cylinder device 50A, and the cylinder device of the fixing/releasing device 40 arranged on the rear side. 50 is a cylinder device 50B, the cylinder device 72 of the interlock mechanism 70 arranged on the front side of the operating table S is the cylinder device 72A, and the cylinder device 72 of the interlock mechanism 70 arranged on the rear side is the cylinder device 72B. As described below.

  First, as shown in FIG. 8, the control device of the operating table S controls the valve unit 49 so that the hydraulic oil is supplied to the cylinder device 50A of the fixing/releasing device 40 arranged on the front side, and the rear part The valve unit 49 is controlled so that the hydraulic oil can be discharged to the tank T from the cylinder device 50B of the fixing/releasing device 40 arranged on the side.

  Then, by driving the pump P of the hydraulic pressure generator 48, hydraulic oil is supplied to the cylinder device 50A arranged on the front side, and the hook 35 of the cylinder device 50A rotates, and the hook 35 rotates the first vertical shaft 21. Are fixed (Fig. 4).

  Further, when the vertical drive device 25 is driven to move upward, and the vertical rotation is started such that the front of the table 10 tilts downward with the first vertical shaft 21 as a fulcrum, the second vertical shaft 22 moves upward. By moving, the hook 35 rotated by the cylinder device 50B arranged on the rear side reversely rotates, and the fixation of the second vertical shaft 22 by the hook 35 is released (FIG. 4). At that time, as shown in FIG. 8, the spherical body 55 is pushed back into the cylinder device 50B by the rotation of the hook 35 that is rotated by the cylinder device 50B, and the hydraulic oil in the cylinder device 50B is passed through the hydraulic circuit. It is discharged (returned) to the tank T.

  Further, as shown in FIG. 8, the hydraulic circuit 47a connected to the front cylinder device 50A is connected to the cylinder device 72B of the interlock mechanism 70 arranged on the rear side, and the pump P of the hydraulic pressure generator 48 is connected. The hydraulic oil is supplied to the cylinder device 72B by the driving of, so that the rod 71 is drawn into the cylinder body 73. On the other hand, the hydraulic circuit 47b connected to the rear cylinder device 50B is connected to the cylinder device 72A of the interlock mechanism 70 arranged on the front side. The rod 71 of the cylinder device 72A discharges the hydraulic oil to the outside by the pressing force of the elastic member 74 and extends.

  Therefore, since the rod 71 of the cylinder device 72B is pulled into the cylinder body 73, the rotation of the hook 35 arranged on the rear side is not hindered, while the rod 71 of the cylinder device 72A is arranged on the front side. Engage with a portion of 35 to prevent clockwise rotation.

  As described above, the operating table S according to the present embodiment is arranged above the column 5 standing on the base 2 so as to be connectable to either one of the at least two vertical shafts 21 and 22. And a vertical drive device 25 for vertically moving the table 10 through a connecting shaft 23 disposed between the two vertical shafts 21 and 22, and one of the vertical drive devices 25 depending on the inclination direction of the table 10. The vertical rotation shaft 21 or 22 is defined as a fulcrum shaft of the table 10, and the vertical rotation driving device 25 is driven to vertically rotate the table 10.

  As described above, in the operating table S of the present embodiment, in the vertical motion of the table 10, one of the vertical shafts 21 and 22 is fixed by the hook 35 and the other vertical shaft 21, The fixing of the hook 22 by the hook 35 is released.

  Specifically, the vertical rotation shafts 21, 22 on the rising side of the table 10 in the tilt direction are released from being fixed by the hooks 35, and the vertical shafts 21, 22 on the lower side of the table 10 in the tilt direction are used as fulcrum shafts. This makes it difficult for the table 10 to interfere with other members when the table 10 is largely tilted.

  Therefore, in the vertical roll operation of the table 10, the vertical roll shafts 21 and 22 on the descending side are selected as the fulcrum shafts, so that interference with other components arranged below the table 10 can be easily prevented.

  It should be noted that the present embodiment is one form and is not limited to this form. For example, in the operating table of the present embodiment, an example in which the present invention is applied to a vertical rotation mechanism that tilts the table in the front-rear direction is shown, but it is also possible to apply the present invention to a horizontal rotation mechanism that tilts the table in the left-right direction. The tilting direction is not limited.

S Operating table 2 Base 5 Column 10 Table 21, 22 Vertical axis 25 Vertical drive unit 35 Hook 70 Interlock mechanism

Claims (4)

A table arranged so as to be connectable to either one of the two rotary shafts above the column standing on the base,
An elevating device for elevating the table in the vertical direction,
Fixing means for fixing one of the rotating shafts as a fulcrum shaft in accordance with the tilting direction of the table,
And the lifting device is raised pushes the table between the two axes of rotation, is inclined to the table one of the rotating shaft as a fulcrum,
The medical device, wherein the fixing means releases the other rotating shaft so as to be movable when the one rotating shaft is fixed as the fulcrum shaft. The medical device according to claim 1, wherein the elevating device includes a rod that extends and contracts in the vertical direction, and the rod pushes up the table in the vertical direction between the two rotation shafts . The medical device according to claim 1 or 2 , further comprising an interlock mechanism that prevents movement of the fixing means that fixes the rotating shaft. The fixing means includes a plurality of hooks for fixing the rotating shaft rotatably supported, or for movably releasing the fixed rotating shaft,
When fixed by said one one of the hook rotation shaft of the medical according to the other rotating shaft from claim 1, characterized in that to release the other of said hook to one of claims 3 apparatus.

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